package Mouse::Meta::Method::Accessor;
use strict;
use warnings;
-use Carp ();
+use Scalar::Util qw(blessed);
-# internal use only. do not call directly
-sub generate_accessor_method_inline {
- my ($class, $attribute) = @_;
+sub _install_accessor{
+ my (undef, $attribute, $method_name, $class, $type) = @_;
my $name = $attribute->name;
my $default = $attribute->default;
my $should_deref = $attribute->should_auto_deref;
my $should_coerce = $attribute->should_coerce;
- my $compiled_type_constraint = $constraint ? $constraint->{_compiled_type_constraint} : undef;
+ my $compiled_type_constraint = $constraint ? $constraint->_compiled_type_constraint : undef;
my $self = '$_[0]';
- my $key = $attribute->inlined_name;
+ my $key = sprintf q{"%s"}, quotemeta $name;
+
+ $type ||= 'accessor';
my $accessor =
'#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
"sub {\n";
- if ($attribute->_is_metadata eq 'rw') {
- $accessor .=
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- 'if (@_ >= 2) {' . "\n";
-
+ if ($type eq 'accessor' || $type eq 'writer') {
+ if($type eq 'accessor'){
+ $accessor .=
+ '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ 'if (scalar(@_) >= 2) {' . "\n";
+ }
+ else{ # writer
+ $accessor .=
+ '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ 'if(@_ < 2){ Carp::confess("Not enough arguments for writer '.$method_name.'") }'.
+ '{' . "\n";
+ }
+
my $value = '$_[1]';
- if ($constraint) {
- $accessor .= 'my $val = ';
+ if (defined $constraint) {
+ if(!$compiled_type_constraint){
+ Carp::confess("[BUG] Missing compiled type constraint for $constraint");
+ }
if ($should_coerce) {
$accessor .=
"\n".
'#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- 'Mouse::Util::TypeConstraints->typecast_constraints("'.$attribute->associated_class->name.'", $attribute->{type_constraint}, '.$value.');';
- } else {
- $accessor .= $value.';';
- }
- if ($compiled_type_constraint) {
- $accessor .=
- "\n".
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- 'unless ($compiled_type_constraint->($val)) {
- $attribute->verify_type_constraint_error($name, $val, $attribute->{type_constraint});
- }' . "\n";
- } else {
- $accessor .=
- "\n".
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- 'unless ($constraint->check($val)) {
- $attribute->verify_type_constraint_error($name, $val, $attribute->{type_constraint});
- }' . "\n";
+ 'my $val = $constraint->coerce('.$value.');';
+ $value = '$val';
}
- $value = '$val';
+ $accessor .=
+ "\n".
+ '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ 'unless ($compiled_type_constraint->('.$value.')) {
+ $attribute->verify_type_constraint_error($name, '.$value.', $attribute->{type_constraint});
+ }' . "\n";
}
# if there's nothing left to do for the attribute we can return during
$accessor .= "}\n";
}
- else {
+ elsif($type eq 'reader') {
$accessor .= 'Carp::confess("Cannot assign a value to a read-only accessor") if scalar(@_) >= 2;' . "\n";
}
+ else{
+ $class->throw_error("Unknown accessor type '$type'");
+ }
if ($attribute->is_lazy) {
$accessor .= $self.'->{'.$key.'} = ';
- $accessor .= $attribute->has_builder
- ? $self.'->$builder'
- : ref($default) eq 'CODE'
- ? '$default->('.$self.')'
- : '$default';
+ if($should_coerce && defined($constraint)){
+ $accessor .= '$attribute->_coerce_and_verify(';
+ }
+ $accessor .= $attribute->has_builder ? $self.'->$builder'
+ : ref($default) eq 'CODE' ? '$default->('.$self.')'
+ : '$default';
+
+ if($should_coerce && defined $constraint){
+ $accessor .= ')';
+ }
$accessor .= ' if !exists '.$self.'->{'.$key.'};' . "\n";
}
if ($should_deref) {
- my $type_constraint = $attribute->{type_constraint};
- if (ref($type_constraint) && $type_constraint->name eq 'ArrayRef') {
+ if ($constraint->is_a_type_of('ArrayRef')) {
$accessor .= 'if (wantarray) {
return @{ '.$self.'->{'.$key.'} || [] };
}';
}
- else {
+ elsif($constraint->is_a_type_of('HashRef')){
$accessor .= 'if (wantarray) {
return %{ '.$self.'->{'.$key.'} || {} };
}';
}
+ else{
+ $class->throw_error("Can not auto de-reference the type constraint " . $constraint->name);
+ }
}
- $accessor .= 'return '.$self.'->{'.$key.'};
- }';
+ $accessor .= 'return '.$self.'->{'.$key."};\n}";
+
+ #print $accessor, "\n";
+ my $code = eval $accessor;
+ $attribute->throw_error($@) if $@;
+
+ $class->add_method($method_name => $code);
+ return;
+}
+
+sub _install_reader{
+ my $class = shift;
+ $class->_install_accessor(@_, 'reader');
+ return;
+}
- my $sub = eval $accessor;
- Carp::confess($@) if $@;
- return $sub;
+sub _install_writer{
+ my $class = shift;
+ $class->_install_accessor(@_, 'writer');
+ return;
}
+
+sub _install_predicate {
+ my (undef, $attribute, $method_name, $class) = @_;
+
+ my $slot = $attribute->name;
+
+ $class->add_method($method_name => sub{
+ return exists $_[0]->{$slot};
+ });
+ return;
+}
+
+sub _install_clearer {
+ my (undef, $attribute, $method_name, $class) = @_;
+
+ my $slot = $attribute->name;
+
+ $class->add_method($method_name => sub{
+ delete $_[0]->{$slot};
+ });
+ return;
+}
+
+sub _install_handles {
+ my (undef, $attribute, $handles, $class) = @_;
+
+ my $reader = $attribute->reader || $attribute->accessor
+ or $class->throw_error("You must pass a reader method for '".$attribute->name."'");
+
+ my %handles = $attribute->_canonicalize_handles($handles);
+
+ foreach my $handle_name (keys %handles) {
+ my $method_to_call = $handles{$handle_name};
+
+ my $code = sub {
+ my $instance = shift;
+ my $proxy = $instance->$reader();
+
+ my $error = !defined($proxy) ? ' is not defined'
+ : ref($proxy) && !blessed($proxy) ? qq{ is not an object (got '$proxy')}
+ : undef;
+ if ($error) {
+ $instance->meta->throw_error(
+ "Cannot delegate $handle_name to $method_to_call because "
+ . "the value of "
+ . $attribute->name
+ . $error
+ );
+ }
+ $proxy->$method_to_call(@_);
+ };
+ $class->add_method($handle_name => $code);
+ }
+ return;
+}
+
+
1;